PURPOSE: A battery pack for a heating vest is provided to reduce the manufacturing costs of a battery pack by using a connection port for common use. CONSTITUTION: A connection port part(110) is selectively connected to either an adaptor or a heating part. A battery part(120) supplies electricity to a heating part connected to the connection port part. A sensing part(140) checks the voltage of the battery part or the voltage of the load connected to the connection port part. A control part(150) determines the heating part or the adaptor by checking the voltage of the battery part or the voltage of the load through the sensing part. The control part supplies electricity from the battery part to the heating part. The control part charges the battery part in the adaptor connected to the connection port part.
